<html>
<head>
<script type="text/javascript">
function disp_prompt()
{
  var name=prompt("请输入收到的验证码")
}
</script>
</head>
<body>
	姓&nbsp&nbsp&nbsp名：<input type=text id=username><br>
	手机号：<input type=text id=checkpin>
	<input type="button" onclick="disp_prompt()" value="获得验证码" />
</body>
</html>